i usually can do about 5-6 sets. i always have the energy to push more sets. i think its just me because i feel like im not gaining anything with proper form and whatnot doing less reps/sets? is it natural that you want to do more? i sometimes get carried away on my days if im really working my chest, i end up doing it for 45mins or so and im burned out to do my tri's.

when you are doing chest exercises such as bench press and incline bench press and dips dont forget those are compound exercises soo try to go heavy which benefits your chest andd triceps soo by the time you are finished doing chest exercises you have also pumped up your triceps which also keep in mind those are the exercises that build the most muscle thats why after you move to isolation exercises for triceps to give them that extra push and shape to full exhaustion which means you dont have to go crazy with too many sets for triceps that is...moral of story go heavy with compound(builds muscle) exercises 1st then last move to isolation(shapes muscle) exercises

Biking 30 minutes to the gym would feel like a waste with 3 sets even lifting 10 elephants. Besides I don't care for strength training. I still lift 75-80% of my 1 rep max though so it's not too light

sometimes less is more, more might be counter-productive which often is the case for beginner. Doing to many sets and too much volume and not growing. I've so far seen better gains with less volume and less sets (doing 531 now with rock climbing 3-4 days a week too) than i ever have.

I do 15 chest 5-12 rep range depending on what week it is. tris get 12 sets for me. These are seperate days though so chest has its own day so i dont think 15 is over board. tris go on arm day which is about 3 days apart from chest and back days.

let me edit this a little lol: 15 sets for chest is on week 5 in week 1 i start with 11 sets, so each week i progress weight and sets.